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Prothena Corp Public (PRTA) Shares Outstanding (Diluted Average) (2019 - 2025)

Prothena Corp Public (PRTA) has 10 years of Shares Outstanding (Diluted Average) data on record, last reported at $53.8 million in Q4 2025.

  • For Q4 2025, Shares Outstanding (Diluted Average) changed 0.11% year-over-year to $53.8 million; the TTM value through Dec 2025 reached $53.8 million, changed 0.11%, while the annual FY2025 figure was $53.8 million, 0.11% changed from the prior year.
  • Shares Outstanding (Diluted Average) reached $53.8 million in Q4 2025 per PRTA's latest filing, roughly flat from $53.8 million in the prior quarter.
  • Across five years, Shares Outstanding (Diluted Average) topped out at $58.0 million in Q3 2023 and bottomed at $40.2 million in Q1 2021.
  • Average Shares Outstanding (Diluted Average) over 5 years is $50.8 million, with a median of $53.0 million recorded in 2023.
  • Peak YoY movement for Shares Outstanding (Diluted Average): increased 28.28% in 2021, then decreased 8.54% in 2022.
  • A 5-year view of Shares Outstanding (Diluted Average) shows it stood at $48.5 million in 2021, then dropped by 2.26% to $47.4 million in 2022, then rose by 12.34% to $53.2 million in 2023, then grew by 1.04% to $53.8 million in 2024, then grew by 0.11% to $53.8 million in 2025.
  • Per Business Quant database, its latest 3 readings for Shares Outstanding (Diluted Average) were $53.8 million in Q4 2025, $53.8 million in Q3 2025, and $53.8 million in Q2 2025.